Multicolor-light-emitting lamp



Au na .1923. v

cQ DURRlGL WI JTlCOLOR LIGHT EMITTING LAMP Filed Aug. 27. 1921 cHARLm Di'mm INVENTOR HTTORNEV Patented An 28, 1923.

entr es stares CHARLES Dl'j'BRIGL, OF VIENNA, AUSTRIA.

* Lea m n I IVEULTICOLOR-LIGHT-EMITTING LAMP.

Application filed August 27, 1921. Serial N0 496fl55. 7' i T 0 all whom it may concern Be it known that I, CHARLES DY'Q RRIGL,

subject of the Republic of Austria, residingatVienna, III. Untere l iaduktgasse Nr.

35,!rustria Republic, have invented certain new and useful Improvements in Multicolor-night-Emitting Lamps, of which thc or less rapid succession and suddenly or gradually and at the same time to increase the number of colours of the light so emitted. In apparatus of this class as heretofore constructed more particularly for advertising purposes, either fixed lamps provided with reflectors and coloured cylinders or bulbs were used or movable coloured screens were used. The colour eflectsobtained by the first named class of apparatus are too monoto nous for advertising purposes as-they produce only light of one colour; the apparatus of the second named class produces more variegated eliects which, however, are still too monotonous, a small number or" colours following successively always in the same order. In order to provide for more attractive and striking effects than could be secured by the apparatus used heretofore I provide a light emitting body and a multi color transparent screen surrounding the light emitting body in the optical axis of a reflector and means for moving such screen in the direction of the said optical axis, whereby by simply varying the movement of the said screen the colours of the light emitted by the reflector may be varied in number and sequence within very wide limits, more or less suddenly or gradually.

"the same in any desired manner. 'In the case show side elevations of with the improved multicolor light emit-- ting lamps.

. plan respectively of an apparatus provided Figs. 8 and 9-show a'letter composed of N vertical section respectively; r As shown 1n the drawings thelight emittmg body 1 such as the filament of an electhe improved lamp in front elevation and" tric incandescent lampis'arranged in the v optical axis of a reflector 2 which may be more or less curved or even plane as circumstances mayrequire. 3 is a transpagn cut screen for instance oif stained showiug'a variety of coloursdistributed over of an. electric incandescent lam-p this screen may be the bulb of thel'amp itselt'as shown in Fig. 3; in case of other lamps thescreen may be astructure independentof the light emitting body as shown in Fig. 4. This screen is arranged in the optical axis of the reflector 2 and is operated to reciprocate in the direction of such axis, as indicated by the arrow in Fig. 1, by any suitable gearing.

The different colours desired may be dis-i tributed over the screen in any suitable mannor. for instance in helical strips as shown in Figs. 3and- 4L. I

As long as the sereen is at rest the re fiector emits light of different colours simultaneously, and in the case of the distribution of the coloured strip illustrated by Figs. 3 and 4 different sectors of the reflector 2 emit light of difierent colours.- 7 If 'now the screen is reciprocated inthe direction of the arrow Fig. 1 the colour of the I required is that the screen and the reflector reciprocate relatively to each other.

' Multicolor light emitting lamps as above described may be used in connection with any existing advertising devices as for instance inscriptions or pictures to be exhibited as illustrated in Figs. 5 to 9.

The inscription or picture table 11 shown in Figs 5 to 7 is mounted in a box 10 and shows for instance the inscription REX; in rear of each of the letters a reflector 2 is supported on a plate 12 and the light'screens 3 are secured to a reciprocating slide. 13 running on guides 14: and actuated by conthe letters of the inscription show the varying light effects above described.

VThe letter shown in Figs. 8 and 9 is cone; posed of a plurality of light emitting bodies and reflectorssuitably' assembled in any known or preferred manner, the reflector being securedas is seen from Flg. 9 on a supporting plate 20 and the screens 3 are secured tea slide 21 in rear of and reciprocated relatively to the supporting plate 20 by any suitable mechanism not shown.

In order that'during" sunshine while the lamp is not burning aclearly distinguishable inulticoler refieXion effect may be secured.

The screen is provided with an nncolonred transparent tip 31 as shown in Fig 3 which permits the screen to receive in lts inside light directly from the sun.

The mechanismfor reciprocating the re fiectors or the screens may be varied at will Without departing from the essence of the present invention. 7 7

Claims:

1. In an advertising device, the combination with a reflector, of a body adaptedr to emit lightand located in the optical axis of the reflector, a multicolored transparent screen surrounding such light emitting body and automatically operating means for continueusly reciprocating such screen relatively to the reflector in the direction of the optical axis thereof.

2. In an advertising nation with a reflector, of a body adapted to emit light and located in the optical axis of the reflector, a substantially cylindri- Veal transparent screen surroundingsueh' light emitting body and having thereon a plurality of transparent helical strips of different colours and automatically operating means for continuously reciprocating'sueh screen relatively to the reflector in the direction of the optical axis thereof.

CHARLES nun-men devicet the combi 

